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The method for preparing Polyester resin controllable a thermal property
The method for preparing Polyester resin controllable a thermal property
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机译：可控制热性能的聚酯树脂的制备方法
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摘要
In order to improve workability and shrinkability in a post-process of a polyester resin, one or more modifying agents are used in the polyester resin to modify the molecular structure of the polyester to change its physical properties, The present invention relates to a polyester resin capable of controlling thermal properties and capable of imparting processability and processability, and a process for producing the polyester resin. The process for producing a polyester resin capable of controlling the thermal properties of the present invention comprises, as a main component, terephthalic acid and a diol, And is produced by a two-step polycondensation reaction under the condition of not more than 0.5 mol% of the metal catalyst and not more than 0.5 wt% of the heat stabilizer.The polyester resin capable of controlling the thermal characteristics of the present invention having the above-described structure and the method for producing the same can be prepared by using a conventional method, in which a compound material capable of changing the molecular structure of polyethylene terephthalate So that it can be uniformly dispersed during the reaction so as to form a curved molecular chain instead of a straight straight molecular chain in the molecular structure of the finally produced PET and consequently to slow down the crystallization rate so that Tg and Tc , And Tm. It also contains a compound with a weak molecular structure and can produce shrinkage at a certain temperature, so that the shrinking property and workability of the fiber can be adjusted in a desired direction at a post-processing temperature Let's do it.
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